Haylou Smart Watch 2

1.4-inch 2.5D curved LCD display, IP68 waterproof.
Bluetooth 5.0, 12 different sports mode.
Built-in optical heart rate sensor, smart heart rate algorithms, 24-hour continuous monitoring.
Powered by 260 mAh battery, up to 20 days of battery life on a single charge.
Compatible with Android 4.4 and iOS 8 and above.